How do you turn on your n64 GameShark?

You place the Game Shark in the console first, than place the desired game into the top of the Game Shark. After this you turn on the system. If you have a newer version of a Game Shark than you should see a blue title screen saying Game Shark with the logo.

If you don't see this, than chances are you have an older version Game Shark and it won't for every game, but it will still work for a majority of them.